Q: Is 628,635 a Prime Number?
A: No, 628,635 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 628635 can be evenly divided by 1 3 5 7 15 21 35 105 5,987 17,961 29,935 41,909 89,805 125,727 209,545 and 628,635, with no remainder.
Since 628,635 cannot be divided by just 1 and 628,635, it is not a prime number.